AT27C2048 データシートの表示（PDF） - Atmel Corporation
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AT27C2048 Datasheet PDF : 9 Pages
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Block Diagram
AT27C2048
Absolute Maximum Ratings*
Temperature Under Bias ......................-55°C to +125°C
Storage Temperature............................-65°C to +150°C
Voltage on Any Pin with
Respect to Ground ...............................-2.0V to +7.0V(1)
Voltage on A9 with
Respect to Ground ............................-2.0V to +14.0V(1)
VPP Supply Voltage with
Respect to Ground .............................-2.0V to +14.0V(1)
*NOTICE:
Stresses beyond those listed under “Absolute Maxi-
mum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other condi-
tions beyond those indicated in the operational sec-
tions of this specification is not implied. Exposure to
absolute maximum rating conditions for extended
periods may affect device reliability.
Note:
Maximum voltage is -0.6V dc which may undershoot to -
2.0V for pulses of less than 20 ns. Maximum output pin
voltage is VCC + 0.75V dc which may overshoot to +7.0V
for pulses of less than 20 ns.
Operating Modes
Mode/Pin
Read
Output Disable
Standby
Rapid Program(2)
PGM Verify
PGM Inhibit
Product Identification(4)
CE OE PGM
Ai
VIL
VIL
X(1)
Ai
VPP Outputs
X(1) DOUT
X
VIH
X
X
X High Z
VIH
X
X
X
X(5) High Z
VIL
VIH
VIL
Ai
VPP DIN
VIL
VIL
VIH
Ai
VPP DOUT
VIH
X
VIL
VIL
X
X
VPP High Z
A9 = VH(3)
X A0 = VIH or VIL VCC Identification Code
A1 - A16 = VIL
Notes: 1. X can be VIL or VIH.
2. Refer to the Programming characteristics.
3. VH = 12.0 ± 0.5V.
4. Two identifier words may be selected. All Ai inputs are held low (VIL), except A9, which is set to VH, and A0, which is toggled
low (VIL) to select the Manufacturer’s Identification word and high (VIH) to select the Device Code word.
5. Standby VCC current (ISB) is specified with VPP = VCC. VCC > VPP will cause a slight increase in ISB.
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